wooden casks and barrels

IS 11131 - Scope and Key Specifications for Wooden Casks/Barrels

Scope (Clause 3.1)

• The standard specifies sizes and capacities for wooden casks/barrels.
• Sizes must conform to Table 1 (given below).

Table 1: Sizes for Wooden Casks/Barrels

Notes:

• Manufacturing tolerances are allowed.
• Definitions align with IS 707-1968 and IS 6703-1972.

This table ensures uniformity in design and construction for wooden casks/barrels used in packaging and storage.

flowchart LR
    A[Nominal Capacity] --> B[External Height]
    A --> C[Diameter]
    A --> D[Top & Wall Hoops]
    A --> E[Bottom Thickness]
    B --> F[Manufact

IS 11131 - Definitions & Key Specifications for Wooden Casks/Barrels

Key Definitions (Clause 2.1.3)

• Hoop: Circular band (metal, wire, or wood) that holds staves together and reinforces the cask/barrel.

Sizes & Capacities (Clause 3.1 & Table 1)

Construction Specification (Clause 3.2)

• Stave/Plank Thickness: As per Hoop Number in Table 1 (Column 4).

Notes:

• Normal manufacturing tolerances are allowed.
• Hoops reinforce and hold the staves tightly.
• Dimensions ensure structural integrity and capacity.

flowchart LR
    A[Staves] --> B[Hoops (Metal/Wood/Wire)]
    B --> C[Reinforce & Hold Staves]
    C --> D[Cask/Barrel Structure]

This summary

IS 11131: Capacity and Construction of Wooden Casks/Barrels

Key Specifications from Table 1 (Clause 3.1 & 3.2)

Additional Notes:

• Hoops: Metal/wire/wood bands holding staves together (Clause 2.1.3).
• Stave thickness corresponds to hoop thickness in column 4.
• Normal manufacturing tolerances are allowed.

Summary:

• Use Table 1 for size, hoop, stave, and bottom thickness.
• Hoop number and dimensions increase with capacity.
• Bottom thickness varies from 1.25 mm to 1.58 mm depending on size.

flowchart TD
    A[Cask Capacity] --> B[External Height & Diameter]
    B --> C[Number of Hoops]
    C --> D[Hoop Width & Thickness]
    D --> E[Stave

IS 11131: Key Specifications for Wooden Casks/Barrels Materials

1. Sizes and Capacities (Table 1)

2. Materials

• Staves and Planks: Thickness as per Table 1, typically hardwood.
• Hoops: Mild steel or wood; steel hoops attached with aluminium rivets.
• Rivets: Aluminium.

3. Construction Notes

• Hoop numbers and dimensions per Table 1.
• Normal manufacturing tolerances allowed.
• Bottom thickness varies with capacity and is specified in Table 1.

This table and specifications ensure structural integrity and durability of wooden casks/barrels as per IS 11131.

IS 11131: Manufacturing Requirements for Wooden Casks/Barrels

Key Specifications from Table 1 (Clause 3.1)

Additional Manufacturing Notes

• Hoops: Made of mild steel or wood.
• Attachment: Hoops are fixed using aluminium rivets.
• Tolerances: Normal manufacturing tolerances are permissible.

Summary Diagram of Hoop Attachment

graph LR
    Barrel[Wooden Barrel Body]
    Hoop[Hoop (Mild Steel / Wood)]
    Rivet[Aluminium Rivet]

    Hoop -->|Attached by| Rivet
    Rivet -->|Fixes| Barrel

This ensures structural integrity and durability per IS 11131.

IS 11131 - Assembly of Wooden Casks/Barrels

Key Specifications (Clause 3.1 & Table 1)

• Staves thickness = Hoop Number (col 4 in Table 1)
• Assembly: Per Clause 8.1, casks/barrels must be delivered fully assembled.
• Manufacturing tolerances are allowed for all dimensions.

Summary:

• Use Table 1 for sizes and thicknesses.
• Ensure complete assembly before delivery.
• Staves and planks thickness corresponds to hoop numbers.

flowchart LR
    A[Staves & Planks] --> B[Thickness as per Table 1]
    B --> C[Assembly of Cask/Barrel]
    C --> D[Attach Hoops (Number, Width, Thickness)]
    D --> E[Attach Bottom (Diameter, Thickness)]
    E --> F[Complete Assembled Cask]
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IS 11131: Sampling and Testing - Key Points

• Clause 7.1: Sampling & testing procedures depend on the contents filled in the casks and must be mutually agreed upon by purchaser and supplier. No fixed formula or table is prescribed for sampling/testing.

Relevant Specifications from IS 11131:

• Note: Manufacturing tolerances are allowed.

Summary:

• Sampling/testing methods are not standardized; they depend on content and mutual agreement.
• Use Table 1 for dimensional specifications of wooden casks/barrels.
• Refer to IS 707 and IS 6703 for related timber and packaging definitions.

flowchart TD
    A[Start: Cask Content Type] --> B{Agreement?}
    B -- Yes --> C[Define Sampling & Testing Procedure]
    B -- No --> D[Negotiate Procedure]
    C --> E[Perform Sampling & Testing]
    E --> F[Quality Check]
    F --> G[Accept/Reject]

For detailed testing norms, consult purchaser-supplier agreements or relevant content-specific standards.

IS 11131: Delivery Conditions for Wooden Casks/Barrels

Key Specifications (Clause 3.1 & Table 1)

Additional Delivery Conditions (Clause 10.1)

• Marking: Each cask/barrel must be legibly and indelibly marked with:
  • Manufacturer's name or trademark
  • Year and month of manufacture
  • Capacity in litres

Notes

• Normal manufacturing tolerances are allowed for all dimensions.
• Reference standards for definitions: IS 707-1968, IS 6703-1972.

This ensures uniformity in size, strength, and traceability of wooden casks/barrels for packaging and transport.

IS 11131: Performance Tests for Wooden Casks/Barrels

Key Specifications & Tests

• Marking (Clause 10.1): Each cask/barrel must be clearly marked with:

  • Manufacturer's name/trademark
  • Year and month of manufacture
  • Capacity in litres

• Sizes & Dimensions (Table 1, Clause 3.1):

• Performance Tests (Clause 9.3):

  • Inclined Impact Test:
    • One cask of each capacity is rolled freely on its side on an inclined surface.
    • It stops against an impact surface or bumper.
    • Dimensions of the incline are agreed upon by purchaser and manufacturer.
    • Refer IS:7028 (Part 3) - 1973 for detailed procedure.

• Other Tests:

  • Horizontal impact test
  • Pendulum test

Summary

IS 11131: Marking of Wooden Casks/Barrels

Key Marking Requirements (Clause 10.1)

Each cask/barrel shall be legibly and indelibly marked with:

• Manufacturer's name, initials, or recognized trademark
• Year and month of manufacture
• Capacity in litres

Optional Marking (Clause 10.1.1)

• ISI Certification Mark may be applied following ISI rules, indicating compliance and quality control.

Sizes & Dimensions (Clause 3.1, Table 1)

Note: Manufacturing tolerances apply.

Summary Diagram of Marking Information

flowchart TD
    A[Cask/Barrel] --> B[Marking]
    B --> C[Manufacturer's Name/Trademark]
    B --> D[Year & Month of Manufacture]
    B --> E[Capacity in Litres]
    B --> F{Optional}